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HSE Zoology
Reptiles
115
Other
10th Grade
11/30/2010

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Term
Reptile taxonomy
Definition
Kingdom Anamalia
Phylum Chordata
Subphylum Vertebrata
Class Reptilia
Term
Reptiles have what kind of eggs?
Definition
Amniotic egg – shelled
Term
Do reptiles have internal or external fertilization?
Definition
Internal
Term
A reptiles skin consists of this?
Definition
Scales or plates.
Term
If a reptile has legs, how many do they have?
Definition
2 pairs, with claws.
Term
What do reptile feet have that most amphibian feet don't have?
Definition
Claws
Term
Describe a reptile's lungs.
Definition
They are well developed.
Term
Are reptiles warm blooded or cold blooded?
Definition
Cold blooded.
Term
What characteristics of reptiles have helped them succeed on land?
Definition
Scales, internal fertilization, amniote egg (shells).
Term
Describe a reptile's egg shell.
Definition
porous, prevents rapid water loss
Term
Chorion
Definition
lines egg shell used in gas exchange
Term
Amnion
Definition
encloses embryo
Term
Allantois
Definition
develops from embryo; carries on embryonic respiration and excretion
Term
Yolk sac
Definition
contains food supply
Term
What is an example of Order Rhynchoephalia?
Definition
Tuatara
Term
In what country is the Tuatara found
Definition
New Zealand
Term
The Tuatara looks like what?
Definition
A large lizard
Term
A Tuatara has a special eye. What is it's name and function?
Definition
Parietal eye. third eye covered by skin; senses sun’s radiation AND shadows from animal flying overhead
Term
Parietal eye
Definition
Third eye covered by skin; senses sun’s radiation AND shadows from animal flying overhead
Term
Example of Order Chelonia.
Definition
turtles
Term
Sea turtles have what kind of feet?
Definition
webbed
Term
Are sea turtles herbivores, carnivores or omnivores?
Definition
omnivores, they eat both animals and plants
Term
Sea turtles have soft shells. What benefit does this provide?
Definition
It makes them streamlined.
Term
Terrapin turtles have what kind of feet?
Definition
Webbed with claws.
Term
Turtle scute
Definition
Symetrical plates covering a boney under layer
Term
carapace
Definition
top shell of a turtle
Term
plastron
Definition
bottom shell of a turtle
Term
What is another name for a land turtle?
Definition
Tortise
Term
Describe the neck and legs of a tortise
Definition
Long neck, short legs.
Term
If a tortise can not pull it's neck and legs into it's shell it is usually what?
Definition
Agressive.
Term
How many teeth does a tortise have?
Definition
none
Term
Describe a tortise's sense of hearing
Definition
It is poor. It has a Tympanic membrane
Term
Describe a tortise's sense of sight
Definition
good color vision
Term
Is a tortise's sense of smell good or bad?
Definition
it has a good sense of smell
Term
What determines the sex of tortise egs?
Definition
temperature
Term
Low temperatures cause tortise eggs to be what sex, male or female?
Definition
male
Term
How does temperature determine sex in tortise eggs?
Definition
An enzyme that converts testosterone, the male hormone, into estrogen, the female hormone, is very active at higher temperatures.
Term
Example of order Crocodilian
Definition
Alligators and crocodile.
Term
Are crocidiles and alligators herbivores, carnivores or omnivores?
Definition
carnivores
Term
A reptile's heart has how many chambers?
Definition
4. But some say 3 since the wall dividing the ventricles is only a partial wall.
Term
Why are a crocodile's or alligator's eyes and nostrils raised?
Definition
So the rest of the body can be underwater.
Term
What prevents water from entering an alligator's or crocodile's lungs when their mouth is open?
Definition
A valve at the back of the mouth closes.
Term
thecodont
Definition
socket tooth
Term
Which is more agressive, an alligator or a crocodile?
Definition
crocodile
Term
Which is more terrestial, an alligator or a crocodile?
Definition
alligator
Term
Which is more aquatic, an alligator or a crocodile?
Definition
crocodile
Term
Which has a head that is triangular shaped, an alligator or a crocodile?
Definition
crocodile
Term
Which has a head that is rectangular shaped, an alligator or a crocodile?
Definition
alligator
Term
Which has teeth that can be seen when the mouth is closed, an alligator or a crocodile?
Definition
crocodile
Term
Which has definite vocalizations, an alligator or a crocodile?
Definition
alligator
Term
Are alligators and crocodiles oviparous or viviparous
Definition
oviparous, they lay eggs
Term
Low temperatures cause crocodile and alligator eggs to be what sex, male or female?
Definition
female
Term
Which guard the nest and care for their young, alligators, crocodiles, or both?
Definition
both
Term
Example of Order Squamata
Definition
lizards and snakes
Term
What is unique about a true chameleon's tongue?
Definition
it is longer than their body
Term
What is unique about an iguana's color?
Definition
It changes in response to light, temperature, and mood
Term
True chameleon's live where?
Definition
in trees
Term
arboreal
Definition
tree dwelling
Term
A skink's body is what shape?
Definition
cylindrical
Term
What is unique about a skink's tail?
Definition
It falls off when grabbed
Term
Are a skink's legs strong or weak?
Definition
weak
Term
What is the only poisonous lizard in the US?
Definition
Gila monster
Term
What is the only poisonous lizard in the Mexico?
Definition
beaded lizard
Term
How does a gila monster inject it's venom?
Definition
Gila monsters have enlarged, grooved teeth in their lower jaw. When they bite, their powerful jaws chew the venom in through capillary action along the grooves in these teeth.
Term
What is the most primative lizard (despite talking in TV commercials)?
Definition
the gecko
Term
Why does a gecko have a vertical pupil?
Definition
to see at night
Term
What does a gecko eat?
Definition
insects
Term
What is the largest monitor lizard?
Definition
A komondo dragon
Term
All lizards have what kind of eyelids?
Definition
moveable
Term
All lizards except the gecko see this.
Definition
color
Term
Are a lizards ear internal or external?
Definition
external
Term
Do lizards make noises?
Definition
yes
Term
What kind of climates do lizards live in?
Definition
arid climates
Term
How do lizards conserve water?
Definition
by excreting uric acid (white paste)
Term
Snakes evolved from what animal?
Definition
lizards
Term
What is the most numerous reptile, turtles, lizards or snakes?
Definition
snakes
Term
The top of a snake is covered in what?
Definition
scales
Term
The bottom of a snake is covered in what?
Definition
scutes
Term
ecdysis
Definition
molting (snakes)
Term
A snakes a scales and scutes prevent what?
Definition
water loss
Term
How many vertabrae does a snake have?
Definition
150
Term
How many ribs are attached to each snake vertabrae?
Definition
2 or 1 pair
Term
What is unique about a snake's lungs?
Definition
1 well developed right lung; left is smaller in size
Term
How many chambers does a snake's heart have?
Definition
4. But some say 3 since the wall dividing the ventricles is only a partial wall.
Term
How are a snakes internal organs arranged differently than most animals?
Definition
All organs long and thin and lie alternating, not side by side
Term
What is lateral undulation?
Definition
crawling quickly or swimming, s-shaped motion, most common
Term
What is rectilinear locomotion?
Definition
straight movement, no lateral movement, used by large snakes
Term
What is sidewinding?
Definition
Snake movemnet where the snake twists into loops and touches the ground at 2-3 points; used by desert dwelling snakes or on slippery surfaces
Term
What is concertina locomotion?
Definition
Snake movement - pulling up the body into bends and then straightening out the body forward, used in crawling through tunnels or narrow passages
Term
What is concertina locomotion?
Definition
Snake movement - pulling up the body into bends and then straightening out the body forward, used in crawling through tunnels or narrow passages
Term
Is a snake's ear internal or external?
Definition
internal
Term
What organ is located on the roof of a snake's mouth?
Definition
Jacobson’s organ
Term
How does a snake use it's tongue to smell?
Definition
Tongue picks up scent particles and inserts into Jacobson’s organ
Term
How does a snake smell in "stero"?
Definition
Tongue is forked shaped to sense the direction of the smells
Term
A snake's cornea is permanently protected by what?
Definition
spectacle (a clear scale)
Term
Do snakes have good or bad vision?
Definition
Most have poor vision with exception of the arboreal (tree dwelling) snakes
Term
Are snakes herbivores, carnivores or omnivores?
Definition
carnivores
Term
Snakes kill their prey in 2 ways. What are they?
Definition
Poison or constriction
Term
Do snakes chew their food?
Definition
No, they swallow it whole.
Term
How do snakes swallow their prey?
Definition
Jaw comes unhinged, elastic ligaments stretch, the glottis moves forward (so can breathe while swallowing)
Term
Missing this bone allows snakes to swallow prey whole.
Definition
A sternum
Term
To digest whole animals, snakes have what?
Definition
Strong stomach acid.
Term
There are two types of poisonous snakes. What are they?
Definition
Vipers and Elapsids
Term
Examples of vipers?
Definition
Rattlesnakes, copperheads, adder
Term
Describe pit viper fangs.
Definition
Long thin fangs – fold up when mouth is closed
Term
Describe elapsid fangs.
Definition
Permanently erect fangs (short)
Term
Examples of elapsid snakes.
Definition
Cobras, coral, kraits
Term
Sea snakes belong to this family.
Definition
Hydrophiidae
Term
The african boomslang and twig snakes have rear fangs and belong to this family.
Definition
Colubridae
Term
What does neurotoxin affect?
Definition
The nervous system
Term
What does hemotoxin affect?
Definition
red blood cells
Term
Poisonous snakes contain two types of venom in different amounts of each. What are they?
Definition
neurotoxins and hemotoxins
Term
Ovoviviparous
Definition
retain eggs in body, born alive
Term
Viviparous
Definition
primitive placenta forms; receives nourishment from mother (rare in snakes)
Term
Are snakes oviparous, ovoviviparous or viviparous?
Definition
all three
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